<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        div{
            width: 100px;
            height: 500px;
            border: 2px solid red;
            background: url(img/down_mod.png);
            background-repeat: repeat-y;
        }
    </style>
</head>
<body>
    <div>
        <img src="img/down_pipe.png">
    </div>
</body>
</html>